20095820

素因数分解:

$2^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1553}}^1$

素因数の和:2209

約数の個数: 24

約数和(自身を含む): 42293664

約数和(自身を除く): 22197844

約数列:

[1, 2, 4, 5, 10, 20, 647, 1294, 1553, 2588, 3106, 3235, 6212, 6470, 7765, 12940, 15530, 31060, 1004791, 2009582, 4019164, 5023955, 10047910, 20095820]

約数ペア:

[(1, 20095820), (2, 10047910), (4, 5023955), (5, 4019164), (10, 2009582), (20, 1004791), (647, 31060), (1294, 15530), (1553, 12940), (2588, 7765), (3106, 6470), (3235, 6212)]